package main

import io "fmt"
// import "os"
// import "io"
// import (
//     "sync"
// )

const PI = 3.14

// var name = 'gopher'

type newType int

type gopher struct{}

type golang interface{}

var (
    a int
    b string
)


func main()  {
    io.Println("hello world! ")
}
